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Steam Tug ''Wattle'' is a steam-powered tugboat undergoing refurbishment in Melbourne, Australia. The tugboat was constructed at Cockatoo Island Dockyard during the Great Depression as a project to keep shipyard apprentices employed. The tugboat was built with a riveted steel hull, but welding was used on the bulkheads and fuel bunkers for the first time in an Australian shipyard.〔 The vessel was the first Australian tugboat to be built with an oil-fired compound steam engine.〔 On completion in 1933, the tugboat was offered to the Royal Australian Navy (RAN). Named ''Wattle'' and operated by a civilian crew, the vessel was primarily used for warship towing and manoeuvring, and was also employed as a target tower. The RAN marked the tugboat for disposal in 1969, and she was purchased by a Sydney-based syndicate, who operated the vessel on tourist cruises around and outside Sydney Harbour. The syndicate kept ''Wattle'' operational until 1977, then sold the ship to a Melbourne-based company, who towed ''Wattle'' to Port Phillip in 1979. The tugboat continued to be used for tourist cruises around the bay until 2003, when it failed survey and had to be withdrawn from service. ''Wattle'' was initially moored at Victoria Dock while money was raised to refurbish the ship, then was relocated to Victoria Harbour during the Docklands redevelopment. In 2007, the Sorrento Steam organisation and the Bay Steamers Maritime Museum joined the project: the former using the restoration of ''Wattle'' as a stepping stone towards their own plans to restore steam trams in Sorrento. In 2009, the tugboat was removed from the water and placed on blocks in a temporary shipyard in the Docklands precinct. The intention is to bring the vessel back to survey standard and resume passenger operations. ''Wattle'' was listed by the National Trust as being of national historic significance on 16 June 1993.〔 According to the National Trust, ''Wattle'' is the only surviving small harbour steam tug in Australia, and one of only twenty-two worldwide.〔 It is also one of only eight Australian-built steam-powered ships of any kind remaining.〔 In addition to multiple 'firsts' in construction, the vessel serves as an important example of Depression-era shipbuilding and the transition of technology occurring at this time.〔 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Steam Tug Wattle」の詳細全文を読む スポンサード リンク
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